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 #include &lt;QtDesigner/QDesignerContainerExtension&gt;
 #include &lt;QtDesigner/QDesignerCustomWidgetInterface&gt;

 #include &lt;QtCore/qplugin.h&gt;
 #include &lt;QtGui/QIcon&gt;
 #include &lt;QtGui/QLineEdit&gt;

 #include &quot;xform.h&quot;
 #include &quot;pathdeform.h&quot;
 #include &quot;gradients.h&quot;
 #include &quot;pathstroke.h&quot;
 #include &quot;hoverpoints.h&quot;
 #include &quot;composition.h&quot;

 class QDesignerFormEditorInterface;
 class PathDeformRendererEx : public PathDeformRenderer
 {
     Q_OBJECT
 public:
     PathDeformRendererEx(QWidget *parent) : PathDeformRenderer(parent) { }
     QSize sizeHint() const { return QSize(300, 200); }
 };

 class DemoPlugin : public QDesignerCustomWidgetInterface
 {
     Q_INTERFACES(QDesignerCustomWidgetInterface)
         public:
     DemoPlugin() : m_initialized(false) { }
     bool isContainer() const { return false; }
     bool isInitialized() const { return m_initialized; }
     QIcon icon() const { return QIcon(); }
     QString codeTemplate() const { return QString(); }
     QString whatsThis() const { return QString(); }
     QString toolTip() const { return QString(); }
     QString group() const { return &quot;Arthur Widgets [Demo]&quot;; }
     void initialize(QDesignerFormEditorInterface *)
     {
         if (m_initialized)
             return;
         m_initialized = true;
     }
 private:
     bool m_initialized;
 };

 class DeformPlugin : public QObject, public DemoPlugin
 {
     Q_OBJECT
 public:
     DeformPlugin(QObject *parent = 0) : QObject(parent) { }

     QString includeFile() const { return &quot;deform.h&quot;; }
     QString name() const { return &quot;PathDeformRendererEx&quot;; }

     QWidget *createWidget(QWidget *parent)
     {
         PathDeformRenderer *deform = new PathDeformRendererEx(parent);
         deform-&gt;setRadius(70);
         deform-&gt;setAnimated(false);
         deform-&gt;setFontSize(20);
         deform-&gt;setText(&quot;Arthur Widgets Demo&quot;);

         return deform;
     }

 };

 class XFormRendererEx : public XFormView
 {
     Q_OBJECT
 public:
     XFormRendererEx(QWidget *parent) : XFormView(parent) { textEditor = new QLineEdit; }
     QSize sizeHint() const { return QSize(300, 200); }

 public slots:
 void setText(const QString &amp;text) { textEditor-&gt;setText(text); }
 };

 class XFormPlugin : public QObject, public DemoPlugin
 {
     Q_OBJECT
 public:
     XFormPlugin(QObject *parent = 0) : QObject(parent) { }
     QString includeFile() const { return &quot;xform.h&quot;; }
     QString name() const { return &quot;XFormRendererEx&quot;; }

     QWidget *createWidget(QWidget *parent)
     {
         XFormRendererEx *xform = new XFormRendererEx(parent);
         xform-&gt;setText(&quot;Qt - Hello World!!&quot;);
         return xform;
     }
 };

 class GradientEditorPlugin : public QObject, public DemoPlugin
 {
     Q_OBJECT
 public:
     GradientEditorPlugin(QObject *parent = 0) : QObject(parent) { }
     QString includeFile() const { return &quot;gradients.h&quot;; }
     QString name() const { return &quot;GradientEditor&quot;; }

     QWidget *createWidget(QWidget *parent)
     {
         GradientEditor *editor = new GradientEditor(parent);
         return editor;
     }
 };

 class GradientRendererEx : public GradientRenderer
 {
     Q_OBJECT
 public:
     GradientRendererEx(QWidget *p) : GradientRenderer(p) { }
     QSize sizeHint() const { return QSize(300, 200); }
 };

 class GradientRendererPlugin : public QObject, public DemoPlugin
 {
     Q_OBJECT
 public:
     GradientRendererPlugin(QObject *parent = 0) : QObject(parent) { }
     QString includeFile() const { return &quot;gradients.h&quot;; }
     QString name() const { return &quot;GradientRendererEx&quot;; }

     QWidget *createWidget(QWidget *parent)
     {
         GradientRenderer *renderer = new GradientRendererEx(parent);
         renderer-&gt;setConicalGradient();
         return renderer;
     }
 };

 class PathStrokeRendererEx : public PathStrokeRenderer
 {
     Q_OBJECT
 public:
     PathStrokeRendererEx(QWidget *p) : PathStrokeRenderer(p) { }
     QSize sizeHint() const { return QSize(300, 200); }
 };

 class StrokeRenderPlugin : public QObject, public DemoPlugin
 {
     Q_OBJECT
 public:
     StrokeRenderPlugin(QObject *parent = 0) : QObject(parent) { }
     QString includeFile() const { return &quot;pathstroke.h&quot;; }
     QString name() const { return &quot;PathStrokeRendererEx&quot;; }

     QWidget *createWidget(QWidget *parent)
     {
         PathStrokeRenderer *stroke = new PathStrokeRendererEx(parent);
         return stroke;
     }
 };

 class CompositionModePlugin : public QObject, public DemoPlugin
 {
     Q_OBJECT
 public:
     CompositionModePlugin(QObject *parent = 0) : QObject(parent) { }
     QString includeFile() const { return &quot;composition.h&quot;; }
     QString name() const { return &quot;CompositionRenderer&quot;; }

     QWidget *createWidget(QWidget *parent)
     {
         CompositionRenderer *renderer = new CompositionRenderer(parent);
         renderer-&gt;setAnimationEnabled(false);
         return renderer;
     }
 };

 class ArthurPlugins : public QObject, public QDesignerCustomWidgetCollectionInterface
 {
     Q_OBJECT
     Q_INTERFACES(QDesignerCustomWidgetCollectionInterface)
         public:
     QList&lt;QDesignerCustomWidgetInterface*&gt; customWidgets() const
     {
         QList&lt;QDesignerCustomWidgetInterface *&gt; plugins;
         plugins
             &lt;&lt; new DeformPlugin
             &lt;&lt; new XFormPlugin
             &lt;&lt; new GradientEditorPlugin
             &lt;&lt; new GradientRendererPlugin
             &lt;&lt; new StrokeRenderPlugin
             &lt;&lt; new CompositionModePlugin;
         return plugins;
     }
 };

 #include &quot;plugin.moc&quot;

 Q_EXPORT_PLUGIN(ArthurPlugins)</pre>
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